The San Francisco falcons growing up on a ledge at the PG&E building in San Francisco are fledging. Palladin took off a few days ago and at last report, was perched atop a nearby structure. This is recently uploaded video of another baby, Ari, taking that first leap off the ledge. You can fast forward to the end if you want to skip the practice flaps and ledge shuffling. Ari was seen flying down Mission with no other sightings as of this writing.